# Gemini 4 Hydrogen vs GPT-6 Luna

> Side-by-side benchmark comparison for Gemini 4 Hydrogen and GPT-6 Luna across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/gemini-4-hydrogen-vs-gpt-6-luna
- Last updated: November 12, 2026

- Shared sourced benchmarks: 2
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Evidence is too thin for a benchmark verdict: Gemini 4 Hydrogen and GPT-6 Luna share only 2 sourced benchmark rows.

## Summary

- Only 2 shared sourced benchmark rows are available. That is not enough for a broad capability verdict, so this mirror does not name an overall winner.
- GPT-6 Luna has the lower published output-token price.
- GPT-6 Luna has the larger published context window at 1.05M.

## Model Snapshot

| Property | Gemini 4 Hydrogen | GPT-6 Luna |
|----------|----------|----------|
| Creator | Google | OpenAI |
| Type | Proprietary | Proprietary |
| Reasoning | Reasoning | Reasoning |
| Context | 1M | 1.05M |
| Independent public score (not head-to-head) | null | 61 |
| Benchmarks Covered | 5 | 28 |
| Pricing (input/output) | $1.50 / $7.50 | $0.10 / $0.50 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- Gemini 4 Hydrogen public-lane score: Coming soon
- GPT-6 Luna public-lane score: 54.5 (Supported · #44/135)

| Benchmark | Gemini 4 Hydrogen | GPT-6 Luna | Winner |
|-----------|-----------|-----------|--------|
| OSWorld 2.1 Offline | 77.6% | 48.9% | Gemini 4 Hydrogen |
| MKA | 53.4% | Coming soon | Coming soon |
| Terminal-Bench-Science 0.1 | 51.4% | Coming soon | Coming soon |
| Terminal-Bench 4.1 | Coming soon | 15.20% | Coming soon |
| Agents' Last Exam (Linux) | Coming soon | 57.1% | Coming soon |
| ExploitGym | Coming soon | 11.6% | Coming soon |
| Hermes Index | Coming soon | 33.9% | Coming soon |
| Hermes Bench | Coming soon | 70.5% | Coming soon |
| MazeBench | Coming soon | 0% | Coming soon |
| Terminal-Bench 2.1 (Vals) | Coming soon | 73.0% | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- Gemini 4 Hydrogen public-lane score: Coming soon
- GPT-6 Luna public-lane score: 52 (Supported · #39/161)

| Benchmark | Gemini 4 Hydrogen | GPT-6 Luna | Winner |
|-----------|-----------|-----------|--------|
| FrontierCode 2.0 | 38.2% | 21.9% | Gemini 4 Hydrogen |
| DeepSWE | Coming soon | 66.6% | Coming soon |
| Bug Hunt Bench | Coming soon | 18.3 fixes | Coming soon |
| VulcanBench Frontier v4 | Coming soon | 71.9% | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- Gemini 4 Hydrogen public-lane score: Coming soon
- GPT-6 Luna public-lane score: 54.3 (Supported · #47/160)

| Benchmark | Gemini 4 Hydrogen | GPT-6 Luna | Winner |
|-----------|-----------|-----------|--------|
| BioBasicsBench | Coming soon | 37.6% | Coming soon |
| ARC-AGI-1 | Coming soon | 86.67% | Coming soon |
| ARC-AGI-2 | Coming soon | 59.3% | Coming soon |
| ARC-AGI-3 | Coming soon | 0.1% | Coming soon |
| ARC-AGI-3 Provider Adapter | Coming soon | 0.59% | Coming soon |

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- Gemini 4 Hydrogen public-lane score: Coming soon
- GPT-6 Luna public-lane score: 63.6 (Supported · #30/67)

| Benchmark | Gemini 4 Hydrogen | GPT-6 Luna | Winner |
|-----------|-----------|-----------|--------|
| Chartography (no tools) | 66.6% | Coming soon | Coming soon |
| PerceptionBench (tools) | Coming soon | 62.8% | Coming soon |
| ExtractBench Pro | Coming soon | 0% | Coming soon |
| ExtractBench (LlamaIndex) | Coming soon | 91.01% | Coming soon |
| ParseBench | Coming soon | 64.13% | Coming soon |

### Knowledge

- Winner: Insufficient shared evidence
- Gemini 4 Hydrogen public-lane score: Coming soon
- GPT-6 Luna public-lane score: 62.4 (Supported · #42/180)

| Benchmark | Gemini 4 Hydrogen | GPT-6 Luna | Winner |
|-----------|-----------|-----------|--------|
| HealthBench (raw) | Coming soon | 50.0% | Coming soon |
| HealthBench (length-adjusted) | Coming soon | 54.5% | Coming soon |
| HealthBench Professional | Coming soon | 60.8% | Coming soon |
| HealthBench Professional (raw) | Coming soon | 61.2% | Coming soon |
| HealthBench Hard | Coming soon | 31.4% | Coming soon |

### Mathematics

- Winner: Insufficient shared evidence
- Gemini 4 Hydrogen public-lane score: Coming soon
- GPT-6 Luna public-lane score: 78.7 (Unranked · 2 rankable rows)

| Benchmark | Gemini 4 Hydrogen | GPT-6 Luna | Winner |
|-----------|-----------|-----------|--------|
| FrontierMath v2 (Tiers 1-3) | Coming soon | 78.947% | Coming soon |
| FrontierMath v2 (Tier 4) | Coming soon | 56.098% | Coming soon |

## FAQ

### Is there enough evidence to pick between Gemini 4 Hydrogen and GPT-6 Luna?

Not yet. The models share only 2 sourced benchmark rows, so this mirror reports the available measurements and metadata without naming a broad winner.

### What can I compare safely on this page?

Published pricing, context windows, model type, and individual shared benchmark rows are directly comparable. Independent overall scores and non-overlapping benchmark coverage are labeled separately and should not be read as a controlled head-to-head result.

## Related Comparisons

- [Gemini 4 Hydrogen vs Gemini 4 Carbon](/compare/gemini-4-carbon-vs-gemini-4-hydrogen)
- [GPT-6 Luna vs Gemini 4 Carbon](/compare/gemini-4-carbon-vs-gpt-6-luna)
- [Gemini 4 Hydrogen vs Gemini 4 Argon](/compare/gemini-4-argon-vs-gemini-4-hydrogen)
- [GPT-6 Luna vs Gemini 4 Argon](/compare/gemini-4-argon-vs-gpt-6-luna)

## Explore More

- [Gemini 4 Hydrogen profile](/models/gemini-4-hydrogen)
- [GPT-6 Luna profile](/models/gpt-6-luna)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)